SURVEY QUESTIONAIRE – FOR SELECTION THE LONG LIST BIDDER OF “ENGINEERING, PROCUREMENT, CONSTRUCTION, PRE-COMMISSIONING AND COMMISSIONING FOR THE REPAIR OF THE SEA WATER OUTFALL PIPELINE”PACKAGE

Date: 10-Nov-25, Rev. 0

Nghi Son Refinery & Petrochemical Limited Liability Company (NSRP) is planning for the procurement of EPCC for Repair of the Sea Water Outfall Pipeline.

If your company is interested in those procurement packages, please fill in and complete the questionnaire below then send email to anh.nt6@nsrp.com.vn

Subject: “Respond for Questionnaire – EPCC for Repair of the Sea Water Outfall Pipeline” by 17:00PM 21 Nov 2025 at the latest.

1. Project introduction

Seawater water Outfall Pipeline is a critical component of NSRP’s wastewater management system, designed to transport treated effluent from the refinery’s wastewater treatment plant to the sea through a submerged HDPE pipeline with diffuser ports located approximately 2 km offshore.

Survey results conducted in October 2024 and subsequent inspections identified localized leakages, gabion damage, and exposure at junctions J4 and J5, along with seabed erosion and pipe misalignment.

Given that the pipeline must remain operational until the next refinery Turnaround in 2027, NSRP will implement a dedicated repair project during TA2027 to restore system integrity, prevent environmental risks, and ensure continued compliance with discharge regulations.

2. General Scope of Work

The project scope includes Engineering, Procurement, Construction, Pre-commissioning, and Commissioning (EPCC) services, including:

• Detailed engineering design, surveys, root cause analysis, and repair methodology.
• Procurement of HDPE Weholite pipes, clamps, gabions, concrete blocks, steel frames, and accessories.
• Fabrication, pre-construction, and offshore installation of pipeline repair systems.
• Tie-in and repair with existing facilities under isolation and permit control.
• Pre-commissioning and commissioning include leak testing, and integrity verification.
• Environmental and maritime permitting and coordination with relevant authorities.
• Documentation, training, and handover to NSRP Operations.

3. General / key requirements for Contractor capability (questionnaires)

(1) Does your company have valid business registration and legal eligibility to perform offshore or marine pipeline repair works in Viet Nam?

Please provide a valid Business Registration Certificate (name, address, registration no.) and confirm that your licensed business scope includes offshore/marine construction, subsea/diving/ROV, piping/fabrication, and marine logistics. Indicate years of operation in oil & gas/marine and local entity (if foreign).

Evidence to attach: Business Registration (PDF), relevant licenses/permits, company profile.

(2) Does your company have experience in executing engineering design for subsea HDPE outfall pipeline repair works and preparing related permit dossiers?

Provide at least three (3) similar projects within the last ten years involving HDPE outfall/discharge systems, seabed stabilization, diffusers, clamps/spools, and hydraulic or stress analyses. Confirm experience in developing WBS/schedules, calculation packages, and as-built updates.
Evidence to attach: Contracts, project sheets, sample deliverable list (e.g., Table of Contents for calcs/drawings), approval or acceptance certificates.

(3) Does your company have demonstrated experience in performing procurement and construction activities during refinery Turnaround (TA) periods, particularly under tight ROS schedules and multi-interface coordination conditions, for projects in Petrochemical, Thermal Power, Coal Power, Gas Power, Chemical, Fertilizer, Paper, Textile, or Dyeing Plants?

Provide details of at least two (2) TA projects including scope, schedule performance (baseline vs. actual), expediting strategy, and resources used (marine spread, crane barge, tugboats, supply vessels, diving/ROV). Confirm compliance with local regulations.
Evidence to attach: Contracts, vessel certificates, diving/ROV certifications, acceptance certificates.

(4) Does your company hold valid ISO certifications and management systems applicable to this project?

Confirm current certifications: ISO 9001 (Quality), ISO 14001 (Environment), ISO 45001 (OH&S). Describe how your HSE framework aligns with IMCA/OPITO/OSHA standards or equivalent recognized international standards (such as DNV, STCW, ISO 45001, NEBOSH), including training matrix (BOSIET/HUET), diving safety management, emergency response, and marine safety plan.

Evidence to attach: ISO certificates, relevant contracts, sample HSE execution plan from previous project.

(5) Does your company have experience in managing marine assets and obtaining permits/approvals from Vietnamese authorities for offshore works?

Provide details of previous experience interfacing with the Department of Construction (or equivalent), Maritime Administration/Port Authority, MONRE, Fisheries, and Labor Safety authorities. Indicate typical approval lead times and provide recent references.
Evidence to attach: Contracts, approval certificates from authorities for previous projects.

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